Qualification > Math
IGCSE MATHS Doubts
haris94:
--- Quote from: ang3l on May 11, 2010, 06:21:59 pm ---Nov 09 Q 4 & 14 http://www.freeexampapers.us/IGCSE/Maths/CIE/2009%20Nov/0580_w09_qp_22.pdf
Thx alot
--- End quote ---
Q 14)
A = P(1+r/100)n
A = 249(1+1.7/100)3
A = $261.92
interest = A-P
261.92-249
$12.92
haris94:
--- Quote from: Fastal on May 11, 2010, 06:33:34 pm ---
i dont get it either :(
--- End quote ---
from the x-axis u need to move -1 to reach the triangle
this is what i think
if from the x-axis u need to move left, then factor is in -ve
if u move right, factor will be a +ve number
33oomar:
what is the rule for compound intrest please no symbols full words
Shazizzzle:
--- Quote from: haris94 on May 11, 2010, 06:46:01 pm ---from the x-axis u need to move -1 to reach the triangle
this is what i think
if from the x-axis u need to move left, then factor is in -ve
if u move right, factor will be a +ve number
--- End quote ---
This is all crap.
It's clear that if y-axis is the invariant line, up (right, if y-axis is brought horizontal) is +ve, down is negative.
If the x-axis is the invariant line, right is positive and left negative.
People say it's related to the quadrant the shear was in.
The only explanation is that CIE made a mistake and was too lame to admit it, even in the ER, therefore defended the answers WITHOUT GIVING A CLEAR EXPLANATION TO WHY IT WAS -ve.
Also, the principal examiner, has expressed how he would like to reduce graph and transformation questions as they are easy, and replace them with difficult investigating, sequence and probability questions.
As transformation showed up in Nov 2009, is it unlikely to show up this year.
Also, that question was from Paper 4.
We've got Paper 2 tomorrow. Chillax. :)
The Hitman:
--- Quote from: Ari Ben Canaan on May 11, 2010, 06:09:50 pm ---There's something called Google.com :)
--- End quote ---
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LMAO!
*sings google is your friend*
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